With my work as an integration consultant (specialising in TIBCO software) I often have to work with Oracle databases. I almost got roped into learning some of the other Oracle Fusion products too.
Not really a huge fan. Oracle database administration is insanely complex, and it annoys me that application vendors always insist on only supporting oracle, when 99% of apps could get by just fine on a MySQL, PostgreSQL or even SQLite database (Free and open source) if their "enterprise" ambitions could bare it. Nonetheless, I do have to work with this stuff quite a lot, so this website looks useful.